In situ Determination of Nitrate and Hydrogen Sulfide in the Baltic Sea Using an Ultraviolet Spectrophotometer
In situ Determination of Nitrate and Hydrogen Sulfide in the Baltic Sea Using an Ultraviolet Spectrophotometer
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使用紫外分光光度计原位测定波罗的海中的硝酸盐和硫化氢
DOI：
10.3389/fmars.2018.00431
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发表时间：
2018
影响因子：
3.7
通讯作者：
D. Schulz
中科院分区：
文献类型：
--
作者：
David Meyer;R. Prien;Louis Rautmann;Malte Pallentin;J. Waniek;D. Schulz
评估海洋生态系统的健康状况变得越来越重要，特别是在人类活动压力不断增加的背景下。对于波罗的海等被高度工业化国家包围的沿海地区来说，情况尤其如此。硝酸盐和硫化氢等营养物和污染物对生态系统功能有重大影响，是评估自然沃茨状况的几个关键环境指标中的两个，因此引起了人们的极大兴趣。硝酸盐和硫化氢测量的频率和空间覆盖范围目前受到实验室分析和人员成本的限制。光学原位传感器可以通过允许无试剂和快速检测溶解的化学物质来帮助克服这一挑战。一种无化学品的光学传感器已被用于直接和同时测量的两个关键参数，并与传统的方法的结果进行了比较。这些数据是2018年2月在波罗的海进行的一项观测计划中收集的。我们使用OPUS紫外光谱传感器，这是首次部署在沿海沃茨，结合深海遥测系统，使近实时测量CTD剖面。使用多元线性回归程序进行数据处理。OPUS和机载分析的测量结果一致。结果表明，现场紫外-可见分光光度法能够测定波罗的海半咸水沃茨中硝酸盐和硫化氢的浓度分布。
Evaluating the health status of marine ecosystems becomes ever increasingly important especially against the backdrop of rising pressures from human activities. This is true especially for coastal seas such as the Baltic Sea that is surrounded by highly industrialized countries. Nutrients and pollutants such as nitrate and hydrogen sulfide, which have a major impact on ecosystem functioning, are two of several key environmental indicators for assessing the status of natural waters, and therefore of considerable interest. The frequency and the spatial coverage of the nitrate and hydrogen sulfide measurements are currently limited by the cost of the laboratory analysis and personnel. Optical in situ sensors can help to overcome this challenge by allowing reagentless and fast detection of dissolved chemical species. A chemical-free optical sensor has been used for direct and simultaneous measurements of both key parameters, and the results were compared with traditional methods. The data were collected during an observational program conducted in the Baltic Sea in February 2018. We used the OPUS UV spectral sensor, which was deployed for the first time in coastal waters, in combination with a deep-sea telemetry system to enable near-real time measurements during CTD profiling. Data processing was carried out using a multiple linear regression procedure. Measurements from both OPUS and on-board analysis were in good agreement. The results showed, that in situ UV-VIS spectrophotometry provides the capability to determine the concentration distributions of nitrate and hydrogen sulfide in the brackish waters of the Baltic Sea.
影响因子：
11.4
作者：
Beaton, Alexander D.;Cardwell, Christopher L.;Morgan, Hywel
通讯作者：
Morgan, Hywel
影响因子：
12.8
作者：
Chappell, Nick A.;Jones, Timothy D.;Tych, Wlodek
通讯作者：
Tych, Wlodek